A relationship defined by being inherently undefineable. Nebulous in nature, this type of relationship teeters between the ambiguous and the incomprehensible. A classic symptom of this kind of relationship is the response ''I dont know'' when the question ''what's up with you two?'' is presented.

We hang out a lot, but we aren't dating. We're more than friends, but... we're not into titles anyway. We have such a Jes and Charlie relationship. I have a test, I gotta go.